Preheat oven to 350F,Butter and flour 9-inch square pan.,Sift together cocoa, flour, salt and cinnamon.,Melt butter, corn oil, and chocolate over a double boiler.,Place melted chocolate mixture in a mixing bowl.,Allow to cool for 5 minutes.,Add brown sugar and beat well.,Add eggs slowly.,Add cognac.,Slowly add dry ingredients, mixing until incorporated.,Pour into prepared pan.,Bake for 20-30 minutes.,Let brownies cool and cut into desired shapes.,Glaze:.,Melt chocolate, corn oil and cognac over a double boiler.,______,Pour warm glaze over to coat.,Chill until glaze sets.,Refrigerate any remaining glaze in a covered bowl.